Sony Online Entertainment, which makes multiplayer online video games, has laid off 70 employees from its San Diego headquarters.

The business unit of Japan’s Sony Corp. said the layoffs aim to reduce costs and streamline its workforce. Job cuts occurred in San Diego and Austin, Texas.

Sony Online Entertainment announced the layoffs in late August on the website for one of its current games. But it didn’t reveal how many workers would be let go in San Diego or Austin.

Now it has done so — at least in San Diego — in a Worker Adjustment and Retraining Notification Act filing with the state Employment Development Department. Artists, game designers, programmers, project managers and a creative director were among the positions eliminated. Some administrative jobs also were cut, including in human resources, payroll and community relations.

Sony Online Entertainment makes the EverQuest franchise, DC Universe Online and PlanetSide 2, among other titles. The games can be played on computers or game consoles, and they allow participants to interact with each other while playing through an Internet link.

Cagle said the layoffs “will have no impact” on the development of upcoming games. She declined to say how many workers remain at Sony Online Entertainment locally.

“We will continue to focus on our current portfolio of games, such as PlanetSide 2 and DC Universe Online — both of which we’ll be bringing to the PlayStation 4 — as well as the upcoming launches of Dragon’s Prophet on Sept. 18 and EverQuest Next Landmark this winter,” she said.